27729793 has 8 divisors (see below), whose sum is σ = 34129088. Its totient is φ = 21939984.

The previous prime is 27729787. The next prime is 27729803. The reversal of 27729793 is 39792772.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27729793 - 2¹⁷ = 27598721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27739793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152271 + ... + 152452.

It is an arithmetic number, because the mean of its divisors is an integer number (4266136).

Almost surely, 2^27729793 is an apocalyptic number.

It is an amenable number.

27729793 is a deficient number, since it is larger than the sum of its proper divisors (6399295).

27729793 is a wasteful number, since it uses less digits than its factorization.

27729793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304743.

The product of its digits is 333396, while the sum is 46.

The square root of 27729793 is about 5265.9085635814. The cubic root of 27729793 is about 302.6789433707.

The spelling of 27729793 in words is "twenty-seven million, seven hundred twenty-nine thousand, seven hundred ninety-three".